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Finding the Fourth Proportional to 791.02, 1,184.91 and 548.02

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Solution

The fourth proportional to 791.02, 1,184.91 and 548.02 is: 820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.02 : 1,184.91 = 548.02 : x
  2. Step 2: Convert to fraction form
    791.02/1,184.91 = 548.02/x
  3. Step 3: Cross multiply
    791.02x = 1,184.91 × 548.02
  4. Step 4: Simplify right side
    791.02x = 649,354.38
  5. Step 5: Solve for x
    x = 649,354.38/791.02
  6. Step 6: Final answer
    x = 820.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.